There is no 4.2 or 4.3, however there is a 4.0.2 and 4.0.3! 
I think you should try the RC of 4.1, here is the direct link:
http://techsupport.teradici.com/ics/support/DLRedirect.asp?fileID=37476
(You need an account at the Teradici supportsite)
// Linjo